Apparatus

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sensors Mode-S transponder

4B1920

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JNK · BOEING 777-300ER

Hex
4B1920
Octal
22614440
Decimal
4,921,632
Country
CH
Tail
HB-JNK
Type
B77W
Broadcasting now · callsign SWR138 · 31,000 ft
Flights observed
203
Distinct callsigns
18
Country
CH
Last broadcast
Jul 26, 22:00 UTC

Current position

4B1920 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B1920 falls within the block assigned to Switzerland (CH) by ICAO Annex 10, Volume III. Every aircraft registered in Switzerland receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 18 distinct

Callsign Airline Flights Last seen
SWR64E - 17 2026-07-19
SWR65 - 16 2026-07-20
SWR35G Swiss International Air Lines 16 2026-07-23
SWR181 - 14 2026-07-13
SWR139 - 14 2026-06-19
SWR39 Swiss International Air Lines 13 2026-07-24
SWR180 - 13 2026-07-12
SWR93 Swiss International Air Lines 12 2026-07-25
SWR138 - 12 2026-06-19
SWR92 Swiss International Air Lines 11 2026-07-25
SWR177 - 10 2026-07-14
SWR176 - 10 2026-07-13
SWR160 Swiss International Air Lines 9 2026-07-26
SWR161 - 8 2026-07-05
SWR9G - 7 2026-07-19
SWR8T - 7 2026-07-18
SWR41G Swiss International Air Lines 7 2026-07-21
SWR40 - 7 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWR160 ZRH → NRT Jul 26, 11:35 UTCJul 26, 22:00 UTC10h 25m
2026-07-25 SWR93 GRU → ZRH Jul 25, 22:00 UTCJul 26, 08:55 UTC10h 56m
2026-07-25 SWR93 GRU → ZRH Jul 25, 16:55 UTCJul 25, 19:10 UTC2h 15m
2026-07-25 SWR92 ZRH → GRU Jul 25, 11:10 UTCJul 25, 13:40 UTC2h 30m
2026-07-24 SWR92 ZRH → GRU Jul 24, 21:15 UTCJul 25, 08:30 UTC11h 15m
2026-07-24 SWR39 SFO → ZRH Jul 24, 03:00 UTCJul 24, 13:10 UTC10h 10m
2026-07-23 SWR35G ZRH → SFO Jul 23, 12:00 UTCJul 23, 23:35 UTC11h 35m
2026-07-22 SWR93 GRU → ZRH Jul 22, 21:40 UTCJul 23, 08:15 UTC10h 35m
2026-07-22 SWR93 GRU → ZRH Jul 22, 16:45 UTCJul 22, 19:10 UTC2h 25m
2026-07-21 SWR92 ZRH → EZE Jul 21, 21:25 UTCJul 22, 13:40 UTC16h 15m
2026-07-21 SWR41G LAX → ZRH Jul 21, 02:50 UTCJul 21, 13:20 UTC10h 30m
2026-07-20 SWR40 - Jul 20, 12:15 UTCJul 20, 23:35 UTC11h 20m
2026-07-20 SWR65 - Jul 20, 00:05 UTCJul 20, 09:05 UTC9h 0m
2026-07-19 SWR64E ZRH → MIA Jul 19, 11:35 UTCJul 19, 20:50 UTC9h 15m
2026-07-19 SWR9G - Jul 19, 00:40 UTCJul 19, 08:35 UTC7h 55m
2026-07-18 SWR8T ZRH → ORD Jul 18, 11:55 UTCJul 18, 20:55 UTC9h 0m
2026-07-18 SWR9G - Jul 18, 00:50 UTCJul 18, 09:00 UTC8h 11m
2026-07-17 SWR8T ZRH → ORD Jul 17, 11:45 UTCJul 17, 20:25 UTC8h 40m
2026-07-17 SWR65 - Jul 17, 00:10 UTCJul 17, 08:49 UTC8h 40m
2026-07-16 SWR64E - Jul 16, 11:30 UTCJul 16, 20:55 UTC9h 25m
2026-07-15 SWR65 - Jul 15, 23:55 UTCJul 16, 08:50 UTC8h 55m
2026-07-15 SWR64E ZRH → MIA Jul 15, 11:40 UTCJul 15, 20:55 UTC9h 15m
2026-07-14 SWR177 - Jul 14, 16:05 UTCJul 15, 04:10 UTC12h 4m
2026-07-13 SWR176 - Jul 13, 21:20 UTCJul 14, 08:55 UTC11h 35m
2026-07-13 SWR181 - Jul 13, 06:10 UTCJul 13, 17:15 UTC11h 5m
2026-07-12 SWR180 - Jul 12, 16:50 UTCJul 13, 02:55 UTC10h 5m
2026-07-12 SWR39 SFO → ZRH Jul 12, 03:15 UTCJul 12, 13:40 UTC10h 25m
2026-07-11 SWR35G - Jul 11, 12:40 UTCJul 12, 00:30 UTC11h 50m
2026-07-11 SWR65 - Jul 11, 00:00 UTCJul 11, 08:50 UTC8h 50m
2026-07-10 SWR64E - Jul 10, 20:35 UTCJul 10, 21:05 UTC30m
2026-07-10 SWR64E - Jul 10, 11:35 UTCJul 10, 13:00 UTC1h 25m
2026-07-10 SWR9G - Jul 10, 00:55 UTCJul 10, 08:55 UTC8h 0m
2026-07-09 SWR8T ZRH → ORD Jul 9, 11:45 UTCJul 9, 20:40 UTC8h 55m
2026-07-09 SWR9G - Jul 9, 00:55 UTCJul 9, 08:45 UTC7h 50m
2026-07-08 SWR8T ZRH → ORD Jul 8, 12:30 UTCJul 8, 21:20 UTC8h 50m
2026-07-06 SWR177 - Jul 6, 16:00 UTCJul 7, 04:20 UTC12h 20m
2026-07-05 SWR176 - Jul 5, 21:05 UTCJul 6, 08:50 UTC11h 45m
2026-07-05 SWR161 - Jul 5, 02:30 UTCJul 5, 16:45 UTC14h 15m
2026-07-04 SWR160 ZRH → NRT Jul 4, 11:40 UTCJul 4, 23:45 UTC12h 5m
2026-07-03 SWR41G - Jul 3, 05:20 UTCJul 3, 15:25 UTC10h 5m
2026-07-02 SWR40 - Jul 2, 15:45 UTCJul 3, 03:05 UTC11h 20m
2026-07-02 SWR39 SFO → ZRH Jul 2, 03:00 UTCJul 2, 12:55 UTC9h 55m
2026-07-01 SWR35G - Jul 1, 12:35 UTCJul 1, 23:40 UTC11h 5m
2026-07-01 SWR65 - Jul 1, 00:40 UTCJul 1, 09:15 UTC8h 35m
2026-06-30 SWR64E - Jun 30, 12:15 UTCJun 30, 21:50 UTC9h 35m
2026-06-30 SWR65 - Jun 30, 00:35 UTCJun 30, 09:10 UTC8h 36m
2026-06-29 SWR64E ZRH → MIA Jun 29, 12:45 UTCJun 29, 22:10 UTC9h 25m
2026-06-29 SWR65 - Jun 29, 00:39 UTCJun 29, 09:05 UTC8h 25m
2026-06-28 SWR64E ZRH → MIA Jun 28, 12:09 UTCJun 28, 21:50 UTC9h 40m
2026-06-27 SWR177 - Jun 27, 15:49 UTCJun 28, 04:05 UTC12h 15m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the HB-JNK page for operator, model, and routing details .

Mode-S 4B1920 frequently asked

What is Mode-S code 4B1920?
4B1920 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JNK.
Where is Mode-S 4B1920 registered?
Mode-S code 4B1920 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1920 broadcasting right now?
Yes. Mode-S 4B1920 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1920, octal 22614440, decimal 4,921,632.
What flights does 4B1920 operate?
Mode-S 4B1920 has broadcast 18 distinct callsigns, including SWR64E, SWR65, SWR35G, SWR181, SWR139.